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An investigation of the transonic pressure drag coefficient for axi-symmetric bodies


Published March 1994
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Thesis advisor(s): Oscar Biblarz

"March 1994."

Thesis (M.S. in Aeronautical Engineering) Naval POstgraduate School, March 1994

Includes bibliographical references

This thesis investigates the pressure drag coefficient in the transonic regime over an axi-symmetric body, with a set of unique contour surfaces developed in a previous thesis. The contour surfaces were obtained by an exact solution of the small perturbation transonic equation, using the guidelines and tools developed at NPS. In this work, Computational Fluid Dynamics (CFD) was not only used to compute the afterbody contour surface, but also to investigate a conical afterbody and complete bodies, which are composed of an arbitrary forebody (ellipsoid) and a variable afterbody (contour and conical). Euler as well as Navier-Stokes flow-solvers were applied to the geometries of interest, giving Mach-number contours for viscous and inviscid flow, pressure drag coefficient magnitude, and depicting shock wave location. On the basis of these results, it can be verified that our contour surface afterbodies will decrease by 15% the peak of the pressure drag coefficient (C sub d) versus Mach number curves in the transonic regime. These results can be used to design low pressure drag surfaces for such as missiles, projectiles and aircraft engine nacelles

Mode of access: World Wide Web

System requirements: Adobe Acrobat Reader

Indonesian Air Force author


Publisher Monterey, California: Naval Postgraduate School;Springfield, Va.: Available from National Technical Information Service
Pages 120
Language en_US
Call number ocm640616700
Digitizing sponsor Naval Postgraduate School, Dudley Knox Library
Book contributor Naval Postgraduate School, Dudley Knox Library
Collection navalpostgraduateschoollibrary; fedlink; americana
Notes some content may be lost due to the binding of the book.

Full catalog record MARCXML

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